Sand separating and washing machine



(No Model.)

I P. M. PPBIL. SAND SHPARATING AND WASHING MACHINE. No. 324,159.Patented Aug. 11, 1885.

WITNESSES: i, l INVENTOR. .abmfiwm (y I BYglezfi'zii ATTORNEY.

N FEIERS. FhMo-L filognpimr, Washington. 016.

,Fig. 2 is a top plan view of the same.

UNITED STATES PATENT @ITFICEO PHILIP M. PFEIL, OF PITTSBURG,PENNSYLVANIA.

SAND SEPARATING AND WASHING MACHINE.

SPECIFICATION forming part of Letters Patent No. 324,159, dated August11, 1885,

Application filed April .25, 1885. (No model.)

To aZZ whom it may concern:

Be it known that. I, PHILIP M. PFEIL,18- siding at Pittsburg, in thecounty of Allegheny and State of Pennsylvania, a citizen of the UnitedStates, have invented or discovered certain new and useful Improvementsin Sand Separating and Washing Machines, of which improvements thefollowing is a specification.

In the accompanying drawings, which make part of this specification,Figure l is a transverse sectional elevation of a boat provided withmyimproved sand washer and conveyer. Fig. 3 is a section in the line asm, Fig. 2.

The invention herein described relates to certain improvements inmachines for separating and washing sand as collected from the bottomsand bars of rivers, 850.; and the ob- 2o ject of said invention is toprovide for a more complete and thorough separation and cleansing of thesand from the impurities collected therewith; and to these ends myinvention consists in the construction and combinations of parts, all asmore fully hereinafter described and claimed.

In an application, No. 163, 385, of even date herewith, are shown anddescribed certain improvements in sand separating and washing machines,the prominent characteristic of said machine being the separation andwashing of the sand in an open unconfined body of water; and in saidapplication the collecting,

separating, and cleansing, and the receiving and delivering devices areall shown and described as located on one side of the boat; but in thatarrangement ofthese devices or machine's such cleansing of the sand asis necessary for some purposes cannot be readilycffeeted. 1

In order to avoid the above-mentioned ditti cult-ies the sand-catchingpan 1, in lieu of conforming to the shape of the revolving screen, is soconstructed as to form a basin of considerable capacity below therevolving screen 2, as shown in Fig. 1. The sides of this basin areinclined toward each other, so as to cause the sand to be deposited orcollected in such condition as to be acted on by the screw-conveyers3.These conveyers 3 are arranged along one of the inclined sides of thebasin,

said side being provided with a trough-like extension, 4, projectingwithin the hull A of the boat, as clearly shown, and the troughextensionand side are provided with grooves which will partially inclose theconveyers, as shown in Fig. 3. These conveyers-the number employed beingdependent upon the length of the screen which regulates the width of thesand-catching pan and the diameters of the conveyers-are journaled attheir lower ends in the outer side of the sand-pan, and at their upperends in the end of the trough-extension 4. The ends of the shafts of theconveyers projecting through the end of the trough 4 are provided withintermeshing gears 5, said train of intermeshing-gears being driventhrough a suitable system of shafts and gears from a prime motor locatedin the boat. The bottom of the trough 4 is cut awaynear its upper end,as shown at 6, for the discharge of the sand carried up the'trough 4 bythe screwconveyers 3, and below this discharge-opening 6 is located thebasin 7, similar in construction to the pan 1, except that its ends arenot cut away 'semicircularly. In this basin 7 and its groovedtroughextension S are located the screw-conveyers 9, havingtheir shaftsjournaled in the lower side of the basin and in the end of the trough,the lower ends of said shafts being provided with intermeshinggears 10,said train of gears being driven from the same power as the train ofgears 5. The sand is carried up through the trough 8 by the conveyers 9and discharged into the chute 11, whence it passes into the sand-box 12,and from this sand-box it is raised by the elevatorbuckets 13 anddischarged through a chute (not shown) into a flat or other suitablereceptacle outside of the boat. The basin 7 is provided with asupply-pipe, 14, and an outlet-pipe, 15, for the supply and discharge ofwater to and from the basin 7, thereby providing fora further washing ofthe sand in said basin, the

lower ends of the conveyers 9 acting as agi-.

tators to facilitate the removal of all impurities.

The screen 2 is constructedin a manner similar to that described in theapplication above referred tot'. 6., of end bands or rims, and acylinder of wire-netting supported on said bands or rims, but the radialwings are omit- ICO I t w led, the sand being removed from the pan 1, bythe conveyors, as above stated. The ends of the pan are cut away toconform to the con tour of the bands 14;.

The screen 2 and pan 1 are angularly arranged with reference to thesurface of the water, and are similarly sulnnerged below the surface, asstated in said application-i. 0., the lower portion of the screen beingsubmerged for about three-quarters of the length of the screentherebyprovidingfor the operation of the screen in an unconfined body of water.

The boat is proxided with suitable dredging apparatus and chutes for thecollection of the sand and its ('liseharge into the revolving screen.

If desired, only one set ol'conveyers may be employed fortranslcrrlngthe sand from the pan below the screen to the sand-box 12,as represented in dotted lines in Fig. 1. As the conveyors rotate, theycarry up the mingled sand and water from the pan or basin; but thewater, after bring carried up a short distance, will ilow back, carryingwith it mud, clay, and other impurities, leaving the sand clean and freefrom impurities.

I claim herein as my invention- 1. In a sand-washing n1achine,acylindrical screen arranged to revolve with its lower part in thesurface of an open unconfined body of water, such screen being slightlyinclined downward. toward its delivery end, and having an unobstructeddischarge, in combination with a sand-catching pan beneath said screen,and rotary screw-conveyers for removing the sand from the pan,substantially as set forth.

2. In a sand-washing machine, a cylindrical screen arranged to rotatewith its lower part partially submerged below the surface of a body ofwater, in combination with a sandcatching pan beneath said screen, asand box or receptacle, and rotary screw-conveyors for transferring thesand from the pan to the box, substantially as set forth.

3. In a sand-washing machine, a cylindrical screen arranged to rotatewith its lower part partially submerged below thesnrface of a body ofwater, in combination with a sand-catching k pan beneath said screen, asand box or receptacle, rotary screw-conveyors for transferring the sandfrom thepan to said box, and a sand washing basin arrangedintermediatebetween the pan and box, substantially as set forth.

In testimony whereof I have hereunto set my hand.

PHILIP M. PFEIL.

\Vitnesses:

DARWIN S. WoLeo'r'r, R. H. "Wm'r'rLnsny.

